Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since November 2, 2023.
CVE-2023-46604
Apache ActiveMQ Deserialization of Untrusted Data Vulnerability
Added to KEV November 2, 2023
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2023-46604
- CWE
- CWE-502
- Affected products
- ActiveMQ · Apache ActiveMQ · Apache
What happened
Apache ActiveMQ contains a deserialization of untrusted data vulnerability that may allow a remote attacker with network access to a broker to run shell commands by manipulating serialized class types in the OpenWire protocol to cause the broker to instantiate any class on the classpath.
What it means for your business
Apache ActiveMQ is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2023-46604). Apache ActiveMQ contains a deserialization of untrusted data vulnerability that may allow a remote attacker with network access to a broker to run shell commands by manipulating serialized class types in the OpenWire protocol to cause the broker to instantiate any class on the classpath. CISA remediation due date: 2023-11-23. If you need help checking exposure, call (864) 335-9223.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA due date: November 23, 2023
Sources
Related briefs
Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
Citrix NetScaler is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2026-88779). Citrix NetScaler ADC (formerly Citrix ADC) and Citrix NetScaler Gateway (formerly Citrix Gateway) contain an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow for a denial of service. CISA remediation due date: 2026-10-07. If you need help checking exposure, call (864) 335-9223.
Heap buffer overflow in ANGLE in Microsoft Edge vulnerability
Heap buffer overflow in ANGLE in Microsoft Edge vulnerability (CVE-2025-10502) was added to Microsoft’s security update guidance. Information published. If you need help checking exposure, call (864) 335-9223.
Microsoft Exchange Server Elevation of Privilege vulnerability
Microsoft Exchange Server Elevation of Privilege vulnerability (CVE-2026-96940) was added to Microsoft’s security update guidance. Weak authorization in Microsoft Exchange Server allows an authenticated attacker to elevate privileges over a network. If you need help checking exposure, call (864) 335-9223.
Fortinet FortiMail Path Traversal Vulnerability
Fortinet FortiMail is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2026-104286). Fortinet FortiMail contains a path traversal and an improper neutralization of NULL byte or NULL character vulnerability that may allow an unauthenticated attacker to write arbitrary files on the underlying system via crafted HTTP or HTTPS requests. CISA remediation due date: 2026-10-04. If you need help checking exposure, call (864) 335-9223.
Need help patching?
PremierePC monitors KEV alerts for managed clients and helps teams prioritize remediation before attackers do.